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UPD48576209F1 Arkusz danych(PDF) 35 Page - Renesas Technology Corp

Numer części UPD48576209F1
Szczegółowy opis  576M-BIT Low Latency DRAM
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Producent  RENESAS [Renesas Technology Corp]
Strona internetowa  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

UPD48576209F1 Arkusz danych(HTML) 35 Page - Renesas Technology Corp

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µµµµPD48576209F1, µµµµPD48576218F1, µµµµPD48576236F1
R10DS0256EJ0101 Rev. 1.01
Page 35 of 53
Jan. 15, 2016
Figure 2-27. Mode Register Set Command in Multiplexed Address Mode
Notes 1. Bits A10–A17 must be set to all ‘0’.
2. BL=8 is not available for configuration 1 and 4.
3. ±30% temperature variation.
4. Within 15%.
Remark
The address A0, A3, A4, A5, A8, and A9 must be set as follows in order to activate the mode register in
the multiplexed address mode.
Figure 2-28. Power-Up Sequence in Multiplexed Address Mode
Notes 1. Recommended all address pins held LOW during dummy MRS command.
2.
A10-A17 must be LOW.
3.
Address A5 must be set HIGH (muxed address mode setting when
µPD48576209/18/36F1 is in normal
mode of operation).
4.
Address A5 must be set HIGH (muxed address mode setting when
µPD48576209/18/36F1 is already in
muxed address mode).
Remark MRS : MRS command
RFp : REFRESH Bank p
AC : any command
VEXT
VDD
VDDQ
VREF
CK#
CK
COMMAND
200µs MIN.
tMRSC
tRC
MRS
MRS
MRS
RF0
RF1
RF7
AC
ADDRESS
VTT
A
MRS
Ax
Ay
tMRSC
1 cycle
MIN.
1 cycle
MIN.
NOP
NOP
NOP
NOP
Refresh all banks
15µs
A
A
Note 1, 2
Note 1, 2
Note 2, 3
Note 4
Don't care
A4
A5
A4
A3
A3
A0
A8
A9
A3x
0
1
BL
4
A4x
0
1
8 Note 2
0
0
1
1
A9
A9y
0
1
A8
A4y A3y A0x
1
0
Configuration
Configuration
Configuration
1 Note 2 (default)
5
Reserved
Reserved
1 Note 2
Not valid
2 (default)
PLL enabled
PLL Reset
PLL Reset
Burst Length
Burst Length
PLL Reset
Address
Mux
Address Mux
PLL reset (default)
2
3
4
1
0
1
1
0
1
0
1
0
0
0
0
1
1
0
0
1
0
1
0
1
1
Impedance
Matching
Impedance
Matching
A8x
0
1
Resistor
External
A5x
0
1
Nonmultiplexed
(default)
Address multiplexed
A9x
0
1
Enabled
Termination
Disabled (default)
On-Die
Termination
On-Die
Termination
Unused
Note 3
(default)
A17 ····· A10
Note 2
Note 4
Ay
Ax
A17 ····· A10
Reserved
Note 1


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